P2P on-demand playing system and method

Abstract

The invention discloses a P2P on-demand playing system and method. The system comprises an edge server, a directory server, a push server and a play node. The directory server is configured to store video parameters corresponding to each video, wherein the video parameters include an erasure code threshold, a code segment byte number, and a url. The push server is used for acquiring video data from the edge server, cutting the video data into a plurality of data blocks, [N,k] erasure code coding is carried out on each data block to obtain N coding segments, wherein the k expresses an erasure code threshold, the byte number of each coding segment is the coding segment byte number. The play node is used for receiving an on-demand play request including the url of the video. The video parameters corresponding to the video are obtained from the directory server by using the url; the coding segments are obtained from the push server; the coding segments are decoded by using the erasure codethreshold and the coding segment byte number and then playing is carried out. According to the invention, the implementation mode is simple; the cost is low; the occupied bandwidth resources are reduced; and the play starting speed is increased.

Description

technical field [0001] The present invention relates to the technical field of video-on-demand, in particular to a P2P (Peer to Peer, peer-to-peer network) on-demand system and method based on CDN (content distribution network) infrastructure. Background technique [0002] The full name of CDN is Content Delivery Network, that is, content distribution network. The basic idea is to avoid bottlenecks and links on the Internet that may affect the speed and stability of data transmission as much as possible, so as to make content transmission faster and more stable. By placing a layer of intelligent virtual network based on the existing Internet based on node servers placed everywhere in the network, the CDN system can real-time according to the network traffic and the connection of each node, the load status, the distance to the user and the response time and other comprehensive information to redirect the user's request to the service node closest to the user. Its purpose is...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a traditional CDN infrastructure based on the traditional CDN infrastructure to overcome the shortcomings of the existing P2P on-demand system, such as complex implementation methods, high implementation costs, large bandwidth resources, and slow start-up speed. A P2P on-demand system and method that can efficiently utilize unreliable nodes for P2P transmission to reduce implementation costs and save bandwidth resources

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